Helix Small Expanding Document Tube 2.25in / 5.7cm Diameter, expands from 17in to 29in, water and light resistant (x61600) Rigid plastic construction resists creasing and damage in transport and screw cap keeps the elements out and will not come open if dropped Water and light resistant; protects delicate paper from fading and sun exposure Expands from 17in to 29in with 6 adjustable locking positions A must have for anyone transporting important large format plans, artwork, school projects and pictures Convenient built in carry strap; black